Electric installation working with turbo-dynamos and accumulators.



PATENTED FEB. 11, 1908. M. GROB.

ELECTRIC INSTALLATION WORKING WITH TURBO DYNAMOS AND AOCUMULATORS. APPLIGATION FILED AUG. 22, 1906.

2 SHEETS-SHEET 1.

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PATENTED FEB. 11, 1908. M. GROB.

ELECTRIC INSTALLATION WORKING WITH TURBO DYNAMOS AND ACGUMULATORS. APPLICATION FILED AUG. 22, 1906.

2 SHEETSr-SHBET 2.

E G W a fi'lllmt ln MAX GROB, OF WINTERTHUR, SWITZERLAND.

ELECTRIC INSTALLATION WORKING WITH TURBO-DYN AMOS AND ACCUMULATORS.

Specification of Letters'Patent.

Patented Feb. 11, 1908.

Application filed August 22.1906. Serial No. 331.622.

To all whom it may concern:

Be it known that I, MAX G303, a citizen of the Swiss Republic, and resident of Win tion between the accumulator battery and the dynamo. "By the term flturbo-dy namo is to be understood a machine made up from a turbine and a dynamo in such a way that the turbine is in mechanical connection with the dynamo, while. water, steam or gas is employed as the driving medium for the turbine.

According to this invention a movable part of an electromagnetic device, for instance of an electromagnet -or solenoid arran ed in anelectric circuit is connected mec anically'on the one hand with a throttle or cut-off device (valve or the like) for controlling the flow .of the driving fluid to the turbine and on the other hand with a switch serving to make the connection between the accumulator battery and dynamo;

. consequently when the electromagnet is mulator battery is operated.

energized the controlling means for the turbine is simultaneously opened or closed while the switch for closin and breaking the connection between the ynamo and accu- The accompanying drawings illustrate diagrammatically three examples of arrangements according to this invention.

Figure 1 shows the general diagram of the preferred form of construction. Fig. 1 is a view'of a detail of this form of construction, having another position with re ard to that shown in Fig. 1. Figs. 2 and 3 s ow the diagrams of other, more simple embodiments of the invention.

Referring first to Figs. 1 and 1? which show the preferred form of construction, a indicates -a dynamo mechanically coupled with a turbine b and arrangedin circuit with an accumulator battery 0; d is a solenoid or electromagnet, the movable core e of which is mechanically connected on the one hand with the cut-off valve f in the supply nozzle g, for the turbine b, and on the other hand with the bridge iece h of a main switch for breaking and c osing the electric circuit above mentioned; the winding of the electromagnet d is arran ed in a shunt circuit 7' across the terminals of the battery 0, this shunt containing a cut-out or secondary switch i; k is a spring which when no current is flowing through the solenoid d, causes the switch k to be opened and at the same time closes the cut-off valve 1; of the turbine.

With the parts in t e position shown in Fig. 1 if the cut-out switch '1'. in the shunt cirout 1' is automatically closed by means of a device hereinafter referred to, current flows from the charged accumulator battery 0 through the wlnding of the electromagnet (1 whereby this latter is energized and the valve f is o ened while simultaneously the switch h is c osed. The consequence of this is that the turbine b is set in action by the driving fiuid ,allowed to pass through the open nozzle 9 and at the same time, in consequence of the closing of the switch h, the electric connection between the dynamo a and the battery 0 is closed. The dynamo is then in a position to supply current to the accumulator battery to an .extent' corre- 1 for supplying an electric lighting circuit Z and the arrangement hereby is'such that, when single lamps are switched on, firstly the turbineis stopped even if the battery has not beenfully c arged or, secondly, that the turbine remains out of action if it was already idle owing to the battery having been completely charged before the switching on of the lamps, and that in both cases the turbineis set in action again only when all the lamps have been cut out. To this end, the automatic controlling device for the secondary switch 2' is in some respects in relation with the electric li hting circuit Z, the lamps of which are com ined with separate' switches to. The movable contact maker of the switch '5 is mechanically connected with the movable core n of-a solenoid 0 arranged in-a shunt circuit-upon the bating upon said double catch.

tery c and surrounded by an auxiliary solenoid t located in the lighting circuit Z and.

which acts in the same direction as the first. This core carries also a catch-head p arranged to operate in conjunction with two opposite catch-pawls g, g made in one piece after the manner of an escapement catch and arranged to turn around a pivot u, a springs: act- 7 The latter is also under the influence of a releasing electromagnet 1' which has its coil arranged in the lamp circuit, in series with the solenoid t. This arrangement operates in the following manner: Assuming, that the cut-off valve f is opened, the switch it is closed and the lamp circuit is opened, all the switches w having been turned off, the battery will be charged preferably, as is usual, with a compensating resistance (not shown) connected in circuit therewith. By this means the controlling solenoid 0 is influenced in such a way that at a certain potential which corresponds to that of the full load of the battery 0, the core a is drawn in and the cut-out or secondary switch 0', is opened. (This is the position of the parts in Fig. 1). The shunt circuit j is thus broken so that the valve f is closed under the action of the spring 7c and the main switch It is opened, the battery 0 being thus charged and the turbine b thrown out of action.

If now the separate lamps areswitched on at w after the charging of tlfe battery c and the throwing out of action of the turbine b the compensating resistance above referred to being cut off the lighting current flows through the releasing solenoid r, the conseigruence of which is that the pawl q is released om the catch-head p and the core a is released so that this latter can fall under its own weight until it is stopped by the pawl g which is brought into position to engage its catch-head 1) (Fig. 1*). When all the lamps are switched off the current ceases to fiow from the solenoid 1' so that the pawls g, can move back under the tension of the spring w into the posit-ion shown in Fig. 1 whereby the catch-head p and the core 1 are completely freed allowing the cut-out switch '1' to close, whereupon the electromagnet d is energized, the cut-off valve for the turbine driving fluid is opened an simultaneously the switch It is closed for connecting the battery to the dynamo. If lamps are switched in while the battery is being loaded the magnetic actions of the two solenoids o and t are added together so that the core 'n, is drawnup, the circuit 7' of the electromagnet coil d is broken at the switch 01 and'the turbine is thrown out of action. The core at is then held fast by means of the pawl 51 engaging with the catch-head p (the solenoid 1 being still ener ized) and the parts continue in this position until all the lam s are switched off whereupon the core a is. re eased in consequence of the denergizing of the solenoid r, and the switch 01 is closed so that the cut-off valve f for the turbine driving fluid is opened and the switch h is closed to connect the battery with the dynamo. 11' all the separate lamp circuits are simultaneously opened and if the battery charged by the dynamo has reached its full load potential the core n may be raised again-by the action of the solenoid 0 so that its head may be engaged by the pawl g which is new hanging free, which is the condition of affairs illustrated in Fig 1.

Fig. 2 represents a somewhat different embodiment of the invention. Here the lamp circuit 1 has one single switch 8 common to all the lamps, and one single spring pawl q is adapted to cooperate with the headed core a of asingle solenoid 0 connected in shunt to the main circuit. The movable core n is also rigidly connected to the'contaet bridge of the switch'i and further the pawl q is also under the influence of a releasing electromagnet 1 located in the lighting circuit Z. With respect to the other parts indicated by the same letters of reference, they are substantially the same as inthe preferred embodiment above described.

The arrangement of Fig. 2 operates as follows: Assuming that the cut-off valve f is opened, the switch It closed and the lamp circuit switch 3 opened, the battery 0 will be undergoing charging, preferably, as is usual, with a compensating resistance (not shown) connected in circuit therewith. By this means the controlling solenoid o is influenced in such a Way that at a certain potential corres onding to that of the battery 0 when ful y charged, the core at is drawn in and the cut-out switch i is opened. (The parts are shown in this position in the drawing). The shunt j is thus brokenso that the valve f is closed under the action of the spring is .ment with the pawl q. The parts remain in this position until when the lamps are switched in by the closing of the switch s the releasing magnet r is energized whereby the pawl g is released against the action of the s ring as, so that the head p is left free and the cut-out switch '2', can be closed. The consequence of this is that the. solenoid or electromagnet d is energized, the cut-off valve f is opened allowing driving fluid to pass to the turbine and the switch h is closed for connecting the battery with the dynamo.

In Fig. 3, the main parts of'the installation are the same as above described, but this figure shows no outer or working circuit, while theswitch i in the shunt circuit 3' of the electromagnet-coil d is arranged to be operso that when the electro-magnetic device is energized or deenergized the opening and closing of the turbine-controlling device is eil'ected simultaneously with the operation of said switch for the closing or breaking of the connection between the dynamo and the accumulator battery, substantially as described.

2. In electric installations working with turbo-dynamos and electric accumulators the combination with a cut-off device for controlling the flow of driving fluid to the turbine, a connecting circuit between the accumulator battery and the dynamo and a main switch for controlling this circuit, of an electromagnetic device having a movable part connected mechanically on the one hand to said turbine controlling device and on the other hand to said main switch, a shunt circuit inclosing the winding of said electroma netic device, a secondary switch located in t 's shunt circuit in series with said wind ing shunted electromagnetic means for automatically controlling this secondary switch, and an electrically controlled catch device for governing the movable part of the last named electromagnetic means substantially as described.

3. In electric installations working with cuit inclosing the winding of said electroma netic device, a secondary switch located in t is shunt circuit in series with said winding, a shunted solenoid, a movable core therein mechanically connected to the movable part of said secondary switch, a spring acted catch pawl adapted to cooperate with this core so as to retain it temporarily in a position corresponding to the opening of the secondary switch, a working circuit with a cut-cit switch, and a releasing elcctromagnet located in this working circuit and adapted to disengage said catch pawl from the core connected to the secondary switch, substantially as described.

4. In electric installations working with turbo-dynamos and electric accumulators the combination with a cut-oil device for controlling the flow of driving fluid to the turbine, a connecting circuit between the accumulator battery and the dynamo and a main switch for controlling this circuit, of an electromagnetic device having a movable part connected mechanically on the one hand to said turbine controlling device and on the other hand to said main switch, a shunt circuit inclosing the winding of said electroma netic device, a secondary switch located in tIiis shunt circuit in series with said winding, a shunted solenoid, a movable core therein mechanically connected to the movable part of said secondary switch, a spring er. catch pawl adapted to cooperate with Luis core so as to retain it temporarily in a position corresponding to the opening of the secondary switch, another catch pawl connected bodily to the first named and adapted to catch the core connected to the secondary switch in an intermediate osition when it is released from the first catc i pawl, an electric li hting circuit with lamps and separate cut- 0 switches combined therewith, a releasing electromagnet located in the lighting circuit and adapted to act upon the first named catch pawl, and an auxiliary solenoid on the core connected to the seconCary switch, placed in series with the releasing electro- Ina net in the lighting circuit, substantially as described.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

MAX GROB Witnesses:

PAUL GUTTINGER, A. LIEBERKNEGHT. 

